TY - EJOUR
AU - Tayebi, Shekoofeh
AU - Niknam, Khodabakhsh
PY - 2024
DA - February
TI - Synthesis of 4,4′-(arylmethylene)bis(1H-pyrazol-5-ols) via multi-component reactions by using silica-bonded sulfamic acid derivatives
T2 - Iranian Journal of Catalysis
VL - 2
L1 - https://oiccpress.com/iranian-journal-of-catalysis/article/synthesis-of-44%e2%80%b2-arylmethylenebis1h-pyrazol-5-ols-via-multi-component-reactions-by-using-silica-bonded-sulfamic-acid-derivatives/
N2 - The one-pot, multi-component synthesis of 4,4′-(arylmethylene)bis(1H-pyrazol-5-ols) by tandem Knoevenagel-Michael reaction of phenylhydrazine, ethyl acetoacetate and aldehydes in the presence of silica-bonded N-propylpiperazine sulfamic acid (SBPPSA) as a recyclable solid acid catalyst was reported. SBPPSA showed much the same efficiency when used in consecutive reaction runs.
IS - 2
PB - OICC Press
KW - 4, 4′-(Arylmethylene)bis(1H-pyrazol-5-ols). Multi-component reactions, Catalyst, Aldehydes, Silica-bonded N-propylpiperazine sulfamic acid 
EN -